1 / 15

Deuterostomes

Deuterostomes. Phylum Echinodermata. Water vascular system. Starfish moving view from aboral surface Starfish moving view from oral surface. Note bilateral larvae!. Phylum Chordata. Pharyngeal gill slits Dorsal hollow nerve cord Notochord Muscular, post-anal tail. Phylum Chordata.

kiley
Download Presentation

Deuterostomes

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Deuterostomes

  2. Phylum Echinodermata

  3. Water vascular system Starfish moving view from aboral surface Starfish moving view from oral surface

  4. Note bilateral larvae!

  5. Phylum Chordata

  6. Pharyngeal gill slits Dorsal hollow nerve cord Notochord Muscular, post-anal tail Phylum Chordata (a) Cephalochordates Adult Water flow Water flow (b) Urochordates Larva Adult (c) Vertebrates Cross section of embryo Embryo Pharyngeal pouches become gill slits in aquatic vertebrates

  7. Subphylum Urochordates – sea squirts

  8. Subphylum Cephalochordate – lancelets; amphioxus

  9. cartilage bone

  10. Urochordate larva cephalochordate Jawless fish Lung fish Drepanaspis – bony skull Bony fish Cartilaginous fish

  11. Eusthenopteron (~385 mya) Lobe-like fin Panderichthys (~380 mya) Tiktaalik (~375 mya) Fin to limb evolution Acanthostega (~365 mya) Tulerpeton (~362 mya) Limb that can support walking on land

More Related